 |
전자부품 데이터시트 검색엔진 |
|
|
전자부품 데이터시트 검색엔진 |
|
LP2950 데이터시트(HTML) 6 Page - Texas Instruments |
|
||||||||||||||||||||||||||||||
LP2950 데이터시트(HTML) 6 Page - Texas Instruments |
|
|
6 / 25 page 
www.ti.com LP2950 ,, LP2951 ADJUSTABLE MICROPOWER VOLTAGE REGULATORS WITH SHUTDOWN SLVS582D – APRIL 2006 – REVISED MARCH 2007 Electrical Characteristics (continued) V IN = VOUT (nominal) + 1 V, IL = 100 µA, CL = 1 µF (5-V versions) or CL = 2.2 µF (3-V and 3.3-V versions), 8-pin version: FEEDBACK tied to V TAP, OUTPUT tied to SENSE, VSHUTDOWN ≤ 0.7 V PARAMETER TEST CONDITIONS TJ MIN TYP MAX UNIT 25 °C 20 40 FEEDBACK bias current nA –40 °C to 125°C 60 FEEDBACK bias current 25 °C 0.1 nA/ °C temperature coefficient ERROR COMPARATOR 25 °C 0.01 1 Output leakage current VOUT = 30 V µA –40 °C to 125°C 2 25 °C 150 250 VIN = VOUT(NOM) – 0.5 V, Output low voltage mV IOL = 400 µA –40 °C to 125°C 400 25 °C 40 60 Upper threshold voltage mV (ERROR output high)(5) –40 °C to 125°C 25 25 °C 75 95 Lower threshold voltage mV (ERROR output low)(5) –40 °C to 125°C 140 Hysteresis(6) 25 °C 15 mV SHUTDOWN INPUT Low (regulator ON) 0.7 Input logic voltage –40 °C to 125°C V High (regulator OFF) 2 25 °C 30 50 VTAP = 2.4 V –40 °C to 125°C 100 SHUTDOWN input current µA 25 °C 450 600 VTAP = 30 V –40 °C to 125°C 750 VSHUTDOWN ≥ 2 V, 25 °C 3 10 Regulator output current VIN ≤ 30 V, VOUT = 0, µA in shutdown –40 °C to 125°C 20 FEEDBACK tied to VTAP (5) Comparator thresholds are expressed in terms of a voltage differential equal to the nominal reference voltage (measured at VIN – VOUT = 1 V) minus FEEDBACK terminal voltage. To express these thresholds in terms of output voltage change, multiply by the error amplifier gain = VOUT/VREF = (R1 + R2)/R2. For example, at a programmed output voltage of 5 V, the ERROR output is specified to go low when the output drops by 95 mV × 5 V/1.235 V = 384 mV. Thresholds remain constant as a percentage of V OUT (as VOUT is varied), with the low-output warning occurring at 6% below nominal (typ) and 7.7% (max). (6) Comparator thresholds are expressed in terms of a voltage differential equal to the nominal reference voltage (measured at VIN – VOUT = 1 V) minus FEEDBACK terminal voltage. To express these thresholds in terms of output voltage change, multiply by the error amplifier gain = VOUT/VREF = (R1 + R2)/R2. For example, at a programmed output voltage of 5 V, the ERROR output is specified to go low when the output drops by 95 mV × 5 V/1.235 V = 384 mV. Thresholds remain constant as a percentage of V OUT (as VOUT is varied), with the low-output warning occurring at 6% below nominal (typ) and 7.7% (max). 6 Submit Documentation Feedback |
Korean ▼ 
English
Chinese
German
Japanese
Russian
Spanish
French
Italian
Portuguese
Polish
Vietnamese
